Table 1.

Comparison of the German Version of the Foot Function Index (FFI-D) Total Score at the Preoperative and 1-, 5- and 10-Year Follow-up Assessments.

FFI-D		Mean Difference	P value
Preoperative	1-year FU	22.00	<0.01
	5-year FU	34.46	<0.001
	10-year FU	40.50	<0.001
1-year FU	5-year FU	12.46	0.16
	10-year FU	18.50	<0.01
5-year FU	10-year FU	6.05	1.00

P value adjusted for comparing a family of 6.

FFI-D = German version of the Foot Function Index; FU = follow-up.